The IOTA IIS 550 HE NOBAT is a UL Listed stand-alone pure sine wave output inverter designed to provide power to designated emergency lighting fixtures. In a power loss situation, the IOTA IIS 550 HE will supply 550 watts of emergency power from the IIS 550 HE BAT Batteries which must be purchased separately. The IOTA IIS 550 HE works in conjunction with incandescent, LED, and fluorescent lamp and fixture types and will automatically run switched, normally-on, or normally-off designated emergency fixtures. The IIS 550 HE is ideal for applications that utilize multiple lamp and fixture types. The IOTA IIS 550 HE features increased inrush capability to prevent shutdown caused by inrush currents, allowing operation of loads at the full rated output of the unit with no need for circuit de-rating. The IIS 550 HE is designed for high-efficiency performance and is certified in the CA Title 20 Appliance Efficiency Database.